The main problem is that there is NO Indication (not listed in the manual) of how much percentage battery life is used or when it's time to recharge or how much time is needed to fully charge the battery or how long the charge will last. I called Atak customer support and the rep could not find the answer to this question. From my personal experience, Actual BATTERIES (AAA, AA, D, etc.) ARE Much Better for audio devices! They LAST Much longer than charging on a USB port!

My PC windows 7 operating system did not recognized the device, so that was a problem, lucky I still have my computer with XP system. That was able to recognize this device.